What is the explosion-proof square file in explosion-proof tools

Explosion proof square file is a type of explosion-proof tool, made of beryllium bronze both inside and outside. It is suitable for flammable and explosive places such as petroleum, petrochemical, natural gas, gas production stations, refueling stations, liquefied petroleum gas stations, pharmaceuticals, coal mines, etc. Also known as spark free tools.
Explosion proof square files are used in flammable and explosive places to file metal workpieces or trim rectangular grooves of metal workpieces. It can also be used to file or trim the surface of metal workpieces.
Material of explosion-proof square files in explosion-proof tools:
There are two types of materials for explosion-proof square files, namely aluminum bronze alloy and beryllium bronze alloy.
The explosion-proof square file is a manual operation tool that is convenient, fast, durable, and mainly used in flammable and explosive factories.